| The roles of aqueous-phase chemistry and photochemical oxidation in oxygenated organic aerosols formation | |
| Zhan, Bixin1,2; Zhong, Haobin3,4,5; Chen, Hui2; Chen, Yunqian2; Li, Xiang2; Wang, Lin2; Wang, Xinke6; Mu, Yujing7; Huang, Ru-Jin3,4; George, Christian6; Chen, Jianmin1,2,8 | |
| Corresponding Author | Chen, Hui(hui_chen@fudan.edu.cn) ; Chen, Jianmin(jmchen@fudan.edu.cn) |
| 2021-12-01 | |
| Source Publication | ATMOSPHERIC ENVIRONMENT
 |
| ISSN | 1352-2310 |
| Volume | 266Pages:9 |
| Abstract | The formation mechanism and evolution process of secondary organic aerosol (SOA) remain poorly understood due to measurement uncertainties and chemical complexities. Here, we present the characterization of non-refractory fine particles (NR-PM2.5) analyzed by means of a time-of-flight ACSM (ToF-ACSM) at a rural site in the North China Plain during winter. Our results show that air quality in rural areas was heavily polluted by primary organic aerosols (POA), which accounted for 83% of total organic aerosol (OA). The oxygenated organic aerosols (OOA) were mainly generated from local emissions. As pieces of evidence, firstly, less-oxidized OOA (LO-OOA) had good correlations with primary species like biomass burning OA (BBOA) (R2 = 0.54), EC (R2 = 0.46), and chloride (R2 = 0.46), implying LO-OOA was formed with the POA emission processes; secondly, there was a significant increase in OOA concentration after sunrise, indicating a lot of local generation during the daytime; thirdly, the potential source region of OOA was restricted in that of POA, implying that OOAs were converted from where primary emission exists. The formation processes of LO-OOA and more-oxidized OOA (MO-OOA) are different. Aqueous-phase chemistry had a dominant effect on the formation of LO-OOA due to the better correlation between aerosol liquid water content (ALWC) with LO-OOA (R2 = 0.54) than MO-OOA (R2 = 0.15). In comparison, both aqueous -phase and photochemical processes acted on the MO-OOA formation, when odd oxygen (Ox = O3+NO2) was low (Ox < 35 ppb), MO-OOA concentration increased with the increment of ALWC. However, at high Ox level (Ox > 35 ppb), photochemical oxidation played an essential role in MO-OOA formation. |
| Keyword | ToF-ACSM The north China Plain Fine particles Real-time measurements Mass-spectrometry Organic aerosol Chemical composition |
| DOI | 10.1016/j.atmosenv.2021.118738 |
| WOS Keyword | NORTH CHINA PLAIN ; ATMOSPHERIC FINE PARTICLES ; SOURCE APPORTIONMENT ; CHEMICAL-COMPOSITION ; PARTICULATE MATTER ; SECONDARY FORMATION ; MULTILINEAR ENGINE ; SUBMICRON AEROSOLS ; COAL COMBUSTION ; HAZE POLLUTION |
| Indexed By | SCI ; SCI |
| Language | 英语 |
| Funding Project | Ministry of Science and Technology of China, China[2016YFC0202700] ; National Natural Science Founda-tion of China, China[91743202] ; National Natural Science Founda-tion of China, China[41805091] ; National Natural Science Founda-tion of China, China[21806020] ; National research program for key issues in air pollution control, China[DQGG0103] ; National research program for key issues in air pollution control, China[DQGG0102] ; Marie Skodowska-Curie Actions, European Union[690958-MARSU-RISE-2015] |
| WOS Research Area | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| Funding Organization | Ministry of Science and Technology of China, China ; National Natural Science Founda-tion of China, China ; National research program for key issues in air pollution control, China ; Marie Skodowska-Curie Actions, European Union |
| WOS Subject | Environmental Sciences ; Meteorology & Atmospheric Sciences |
| WOS ID | WOS:000715052900002 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ieecas.cn/handle/361006/17199 |
| Collection | 粉尘与环境研究室 |
| Corresponding Author | Chen, Hui; Chen, Jianmin |
| Affiliation | 1.Fudan Univ, Inst Atmospher Sci, Dept Atmospher & Ocean Sci, Shanghai 200438, Peoples R China 2.Fudan Univ, Dept Environm Sci & Engn, Shanghai Key Lab Atmospher Particle Pollut & Prev, Shanghai 200438, Peoples R China 3.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, State Key Lab Loess & Quaternary Geol SKLLQG, Inst Earth Environm, Xian 710061, Peoples R China 4.Chinese Acad Sci, Key Lab Aerosol Chem & Phys, Inst Earth Environm, Xian 710061, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.Univ Lyon, Univ Claude Bernard Lyon 1, IRCELYON, CNRS, F-69626 Villeurbanne, France 7.Univ Chinese Acad Sci, Inst Ecoenvironm, Beijing 100080, Peoples R China 8.Fudan Univ, IRDR Int Ctr Excellence Risk Interconnect & Gover, Inst Atmospher Sci, Shanghai 200438, Peoples R China |
| Recommended Citation GB/T 7714 | Zhan, Bixin,Zhong, Haobin,Chen, Hui,et al. The roles of aqueous-phase chemistry and photochemical oxidation in oxygenated organic aerosols formation[J]. ATMOSPHERIC ENVIRONMENT,2021,266:9. |
| APA | Zhan, Bixin.,Zhong, Haobin.,Chen, Hui.,Chen, Yunqian.,Li, Xiang.,...&Chen, Jianmin.(2021).The roles of aqueous-phase chemistry and photochemical oxidation in oxygenated organic aerosols formation.ATMOSPHERIC ENVIRONMENT,266,9. |
| MLA | Zhan, Bixin,et al."The roles of aqueous-phase chemistry and photochemical oxidation in oxygenated organic aerosols formation".ATMOSPHERIC ENVIRONMENT 266(2021):9. |
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